Hydrogen Trapping in Some Automotive Martensitic Advanced High‐Strength Steels |
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| Authors: | Jeffrey Venezuela Qingjun Zhou Qinglong Liu Mingxing Zhang Andrej Atrens |
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| Affiliation: | 1. Division of Materials, School of Mining and Mechanical Engineering, The University of Queensland, St. Lucia, 4072 Australia;2. Baoshan Iron & Steel Co., Ltd, Research Institute, Shanghai, 201900, China |
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| Abstract: | Hydrogen permeation experiments are used to investigate hydrogen trapping in commercial automotive martensitic advanced high‐strength steels. Hydrogen trapping increases with increasing mechanical strength, as indicated by (i) the decrease in the hydrogen diffusion coefficient, and (ii) the increase in reversible hydrogen trap density. The measured trap densities are in the order of ≈1017– ≈ 1018 cm?3. The relationship between trapping characteristics and HE susceptibility of MS‐AHSS is discussed in terms of Hydrogen Enhanced Macroscopic Plasticity (HEMP) and Hydrogen Assisted Micro‐fracture (HAM). |
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| Keywords: | steel electrochemical permeation hydrogen embrittlement |
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